Combination-tool



G. C. MARTEN. COMBINATION TOIOL. APPLICATION man APR. 12, 1919.

1,374,751. Patented Apr. 12, 1921.

2 SHEETSSHEET 1.

6? Gila/fen G. C. MARTEN. COMBINATION TOOL. APPLICATION FILED APR. 12, 1919.

Patented Apr. 12, 1921.

2 SHEETSISHEET 2.

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UNITED; srATEs GEORGE c. .MARTEN, or EFFINGHAM, ILLINOIS.

I COMBI NATIONsTOOL.

Specification of Letters Patent Patented A 12; 1921 v Application filed April 12, 1919. Serial No. 289,650.

skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in breast drills having means to adapt itself tothe grinding of valves and so forth.

An important object of this invention is to provide a breast drill having'meansto adapt itself for grinding valves so that the valve is caused to rotate. in opposite directions, the angular movement of the valve in one direction being other direction. I

A further object of the invention is. to provide a drill of the character described which by virtue of its extreme simplicity and reliability in use will meet with'conr inercial favor when placed upon the market.

Other objects and advantages of this invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same.

Figure 1 is a vertical section through the tool embodying my invention.

Fig. 2 is avertical section through the same taken at right angles to the plane of Fig. 1. r

Fig. 3 is a vertical section taken on line 83 of Fig. 2, V r

Fig. 4 is a section through an auxiliary power transmitting mechanism adapted for use when it is desired to gain access to valves located in difficult places and Fig. 5 is an elevation of one of the gear wheels embodied in the invention.

In the drawings wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 10 designates the frame of abreast drill having the usual handle or breast piece 11 secured thereto by a set screw 12. The frame 10 carries a yoke 13 receiving a pinion 14 upon a vertical shaft 15. The shaft 15 is connected with the usual chuck 16. The frame 10 is provided with a transversely exgreater than in the 1 the shaft 18, I have provided a spring latch tending opening .17, which, whenathe tool is to be employed as a drill, affords a hearing for a shaft 18. The shaft 18 is pro- 7 vided with a gear 19 having a circular series of gear teeth 20 a'djacenti'its center and meshing with the pinion 1 1. The gear 19 is'held in engagement with the shaft 18 by aset screw 21. A handle 22 may also be arranged on the shaft 18 and secured'thereto by a set screw 22. When the shaft 18 is journaled in the bearing openings 17 the drill is adapted for use as an ordinary breast drlll and imparts a continuous rotary movement to the chuck when the crank handle is turned.

As illustrated in Figs. 1 and 2,the drill is adapted for use in grinding valves. A

ur OFFICE. 1

second gear 23' cooperates with the gear 19 and is mounted on the shaft 18. To permit of the ready removal of the gear 23 from 24 having its ends 25 extending into recess'es in the outer side of the gear 28. The

gear thereby locking the gear to the shaft and yet permitting of its ready removal.

The gear 23 is provided with spaced sets of teeth 29 adapted to engage the pinion 13 periodically. The cooperating gear 19 is also provided'with spaced sets of teeth 30 alternately disposed with relation to the spaced sets of teeth of the gear 23.

The sets of teeth 29 and 30 are adapted to alternately engage the pinion 13 and thereby rotate the chuck in opposite directions. The teeth of each set 80 are greater in numher than the teeth of each set 29 and therefore the chuck is caused to rotate a greater number oftimes in one direction than in the other. To engage the teeth 29 and 30 with the pinion 13, I have provided an opening 31 disposed above the opening 17 and adapted to receive the shaft 18. The chuck'16 is adapted to receive a valve engaging'element.

34 having a second bearing sleeve 35 connected thereto by a web 36. The bearing sleeve 34 receives a shaft 35 having its rear end squared to fit into the chuck 16. The forward end of the shaft 35 carries a beveled gear 36 meshing with a second bevel gear 37. The bevel gear 37 is keyed to a vertical shaft 38 rotatively mounted within the bearing sleeve 35. This form of the invention is especially adapted for use when it is desired to arrange the breast drill in a horizontal position when grinding the valves. The forward end of the shaft 38 is provided with a socket 89 having a set screw 40. The socket 39 receives a valve grinding element 41 which consists of a stem having a universal 'oint 42 interposed therein. The forward end of the valve grinding element 41 is provided with fingers 43 adapted to engage the valve.

While I have shown and described the preferred embodiment of my invention, it is understood that I may make such minor changes in arrangement and construction of parts as will remain within the spirit of the invention and the scope of the appended claims.

Having thus described my invention, what I claim is 1. In a device of the class described, a frame having spaced bearings, a shaft journaled for rotation in the frame, a pinion upon the shaft, an operating shaft adapted to be journaled in the first mentioned bearings, interchangeably, means whereby the last mentioned shaft may be rotated, a gear fixed upon the last mentioned shaft at one side of the same and having concentric series of gear teeth, one series having its teeth arranged in spaced sets and adapted to mesh with the pinion when the shaft is mounted in one of the bearings, and the other series adapted to mesh with the pinion when the shaft is mounted in the other bearing, and a gear removably mounted upon the operating shaft at the other side of the same and having a series of gear teeth arranged in spaced sets and adapted to mesh with the pinion alternately with the sets of the first mentioned series of the first mentioned gear when the operating shaft is mounted as first stated, the last mentioned gear constituting also means for preventing longitudinal displacement of the operating shaft in the bearing.

2. In a device of the class described, a frame having spaced bearings, shaft jour-- naled for rotation in the frame, a pinion upon the shaft, an operating shaft adapted to be journaled in the first mentioned bearings, interchangeably, means whereby the operating shaft may be rotated, a gear fixed upon the operating shaft at one side of the frame and concentric series of ear teeth, one series having its teeth arranger in spaced sets and adapted to mesh with the pinion when the shaft is mounted in one of the bearings and the other series adapted to mesh with the pinion when the shaft is mounted in the other bearing, the shaft in its end at the opposite side of the frame having a socket, a gear removably mounted upon the last mentioned end of the shaft at the said opposite side of the frame and having a series of gear teeth arranged in spaced sets and adapted to mesh with the pinion alternately with the sets of the first mentioned series of the first mentioned gear when the operating shaft is mounted as first stated, and a latch carried by the last mentioned gear and having a portion engageable in the socket whereby to separably connect said last mentioned gear with the said operating shaft.

In testimony whereof I afiix my signature in presence of two witnesses.

-GEORGE C. MARTEN.

Witnesses: C. F. BURKHARDT, ELIZABETH HUELSBUSGHE. 

